D-Link DFL-260E User Manual for DFL-260E - Page 513
Blacklist, Protect, Blacklisting Hosts and Networks, 3. Threshold Rules
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10.3. Threshold Rules Chapter 10. Traffic Management rule, is added automatically to a Blacklist of IP addresses or networks. If several Protect actions with blacklisting enabled are triggered at the same time, only the first triggered blacklisting action will be executed by NetDefendOS. A host based action with blacklisting enabled will blacklist a single host when triggered. A network based action with blacklisting enabled will blacklist the source network associated with the rule. If the Threshold Rule is linked to a service then it is possible to block only that service. When blacklisting is selected, the administrator can choose to leave pre-existing connections from the triggering source unaffected, or can alternatively choose to have the connections dropped by NetDefendOS. The length of time, in seconds, for which the source is blacklisted can also be set. This feature is discussed further in Section 6.7, "Blacklisting Hosts and Networks". 513
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